25 Alderney House, Ferry Court, Cardiff, CF11 0JT

25 Alderney House is a two-bedroom end-of-terrace house in Cardiff (CF11 0JT). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 2003-2006 and council tax band E. There is a swimming pool on the plot, uncommon for the area. At 57 m² this is the 30th smallest of 56 units on EPC record in the building, where floor areas span 40–92 m². The building's EPC ratings span D to B across 56 units on file. The latest certificate (June 2019) shows a C (score 76), near the top of the C band. The rating has held steady at C across 2 certificates since October 2008. Between certificates, lighting went from Poor to Average; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Average to Poor. The recommended improvements would push it to B (score 83). Main heating runs on electricity.

Today's modelled estimate of £166,000 is 26.2% below the 2007 sale of £225,000, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£367/sq ft) was about 36.1% above the typical sold price in the postcode. Untraded for 19 years, with the last transfer in July 2007. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price.